ikiwiki/doc/todo/CSS_classes_for_links.mdwn

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Hi Joey,
What do you think about CSS classes for links to display link with icon?
You probably know that there are wikis with that feature, for example
Moin Moin.
Here is a piece of `common.css` file grabbed from <http://wiki.openwrt.org>
site which is powered by Moin Moin wiki:
a.www:before {content: url(../img/moin-www.png); margin: 0 0.2em;}
a.http:before {content: url(../img/moin-www.png); margin: 0 0.2em;}
a.https:before {content: url(../img/moin-www.png); margin: 0 0.2em;}
a.file:before {content: url(../img/moin-ftp.png); margin: 0 0.2em;}
a.ftp:before {content: url(../img/moin-ftp.png); margin: 0 0.2em;}
a.nntp:before {content: url(../img/moin-news.png); margin: 0 0.2em;}
a.news:before {content: url(../img/moin-news.png); margin: 0 0.2em;}
a.telnet:before {content: url(../img/moin-telnet.png); margin: 0 0.2em;}
a.irc:before {content: url(../img/moin-telnet.png); margin: 0 0.2em;}
a.mailto:before {content: url(../img/moin-email.png); margin: 0 0.2em;}
a.attachment:before {content: url(../img/moin-attach.png); margin: 0 0.2em;}
a.badinterwiki:before {content: url(../img/moin-inter.png); margin: 0 0.2em;}
a.interwiki:before {content: url(../img/moin-inter.png); margin: 0 0.2em;}
You can see that they use a lot of CSS classes for links, but only one CSS class
for external links is enough for me :) Please look at my example:
\[[Foo]] -> <a href="http://www.mywiki.org/foo.html">Foo</a>
\[[Bar|foo/bar]] -> <a href="http://www.mywiki.org/foo/bar.html">Bar</a>
<http://www.gnu.org/> -> <a class="external" href="http://www.gnu.org/">http://www.gnu.org/</a>
[GNU](http://www.gnu.org/) -> <a class="external" href="http://www.gnu.org/">GNU</a>
[RMS](mailto:rms@gnu.org) -> <a href="mailto:rms@gnu.org">RMS</a>
My best regards,
--[[Paweł|ptecza]]
> If you did not already know, you can achieve similar results using CSS3
> selectors. Eg: `a[href="http://www.foobar.com/"] { foobar: css }` or
> `a[title~="Mail"] {text-decoration: none; }`. See
> <http://www.w3.org/TR/2001/CR-css3-selectors-20011113/> for a complete list.
>> Hi Charles,
>>
>> Thanks for the hint! I don't know CSS3 yet :) What modern and popular
>> WWW browsers do support it now?
>>
>>> Safari supports it. Firefoz&Co support most of it. IE6 did not, but IE7
>>> supports a fair part of CSS3, ans is said to support selectors.
>>>
>>> Example on how to use selectors here: http://www.kryogenix.org/days/2002/08/30/external
>>>
>>> I also think this should be in an external plugin, not in ikiwiki.
>>>
> If you need to achieve this in IkiWiki itself, I imagine you could create a
> plugin which runs in the `format` phase of rendering and search/replaces
> specific link patterns. This should be a fairly simple exercise in regular
> expressions.
>
> --CharlesMauch
>> I've never written plugin for ikiwiki, but I can try if it's simple job :)
>>
>> --[[Paweł|ptecza]]
> I wouldn't mind adding a _single_ css class to ikiwiki links, but it
> would have to be a class added to all internal, not all external, links.
> Reason is that there are many ways for external links to get into an
> ikiwiki page, including being entered as raw html. The only time ikiwiki
> controls a link is when an internal link is added using a WikiLink.
>
> (Note that tags get their own special
> [[rel_attribute|rel_attribute_for_link]] now that CSS can use.)
>
> --[[Joey]]